url = 'https://search.jd.com/Search'
qrydata = {
    'keyword':'互联网大数据',
    'enc':'utf-8',
}
lt = []
for k,v in qrydata.items():
    lt.append(k+'='+str(v))
query_string = '&'.join(lt)
url = url + '?' + query_string
print(url)